This equipment allows measurement of contraction and velocity coefficients as well as discharge coefficient for an orifice discharge. It is to be used with Hydraulics Bench i.e. HB100 or HB100N (separately supplied) for a water supply and flow measurement.

It consists of a removable clear acrylic cylinder with adjustable constant head. Water is admitted to the cylinder via a discharge head. An adjustable overflow allows various constant heads for the test. An orifice is fitted at the bottom of the cylinder flush with the base plate. A traverse assembly is provided below the cylinder. Attached to this assembly is a wire and a pitot tube. The wire is to measure the jet diameter hence the vena contracta diameter and the pitot tube is to measure the jet velocity. The velocity head on pitot tube and total head due to tank water level are indicated on manometer tubes. The apparatus rests on adjustable footings and a bull’s eye level is provided.

Instruction manual is also included.